For the anti-jamming problem of global positioning system（GPS） receiver in high dynamic environment， We studies the received signal model of equidistant linear array and the basic principle based on covariance matrix expansion， and simulates and analyzes the effect of two classical anti-jamming algorithms based on covariance matrix expansion： Mailloux algorithm and Zatman algorithm in high dynamic environment. Through Matlab simulation， the results show that compared with the conventional method， Mailloux method and Zatman method can effectively widen the null formed from the interference direction when the array element is an equidistant linear array， which can improve the anti-jamming effect in high dynamic environment and enable the receiver to capture satellite signal.